All I have to do is learn English 是对的吗

All I have to do is to learn English
或者All I have to do is learning English
都行,第一个强调将要实施,第二个强调目前行为

You're wrong. The corret one is: "All I have to do is to learn English".

All I have to do is to learn English
或者All I have to do is learning English

都不对，
应该是all i have to do is to learn english，to do sth做宾语。

All I have to do is to learn English.

All (that)I have to do is to learn English.